ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Assessment of anti-oxidant activity and quantification of epigallocatechin in Acacia suma heartwood by HPTLC-DPPH fingerprinting method

Nikita Kanbarkar, Sanjay Mishra, Shrikrishna Nandanwadkar, and Shankar Alegaon

KAHER’s Dr. Prabhakar Kore Basic Science Research Center [BSRC], III Floor, V. K. I. D. S, KLE Academy of Higher Education and Research (KLE University), Belagavi, India

E-mail: nikkanbarkar@gmail.com

Received: 10 February 2022  Accepted: 21 May 2022

Abstract:

Research on natural anti-oxidant agents increased due to their wide range of applications on various diseases. HPTLC-DPPH is the novel technique where anti-oxidant potential of complex herbal extract can be detected on TLC plate. In thin-layer chromatography, silica gel plates (60 F-₂₅₄) were used as a stationary phase along with THF/Toluene/Acetic Acid/Water [16:8:2:1 (v/v)] as a mobile phase. Cytochrome P-450 inhibitors were predicted by in-silico method as anti-oxidant agent. HPTLC method development and validation were performed on CAMAG HPTLC system along with quantitative estimation of epigallocatechin in hydroalcoholic extract of Acacia suma. HPTLC method had ensured no change in R_F value (0.944) at wavelength 269 nm and revealed presence of epigallocatechin in Acacia suma is 404.2 mg/g. Yellow coloured bands on TLC plate were observed with DPPH reagent to confirm radical scavenging property. The in vitro DPPH radical scavenging assay, hydrogen peroxide assay, nitric oxide assay, total anti-oxidant assay and lipid peroxidation assay were performed, and IC₅₀ values are 81.46 ± 2.72, 61.39 ± 1.85, 21.30 ± 2.26, 55.13 ± 2.86 and 77.03 ± 2.47 µg/ml, respectively. Additionally, in-silico data predicted ‘Diinsininol’ as cytochrome P450 inhibitor with docking score -13.51 kcal/mol. The study findings evident that hydroalcoholic extract of Acacia suma had significant anti-oxidant potential which was confirmed by in vitro assays, molecular docking study and HPTLC-DPPH anti-oxidant approaches.

Keywords: Acacia suma; Anti-oxidants; Cytochrome P450; Epigallocatechin; HPTLC; Polyphenols

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02295-w

Chemical Papers 76 (9) 5865–5878 (2022)